<!DOCTYPE HTML>
<html class="reftest-wait">
<body>
<iframe src="data:text/html,<body style='font-size:100px; overflow:hidden; background:white;'><p>Hello<p>Kitty<p>Hello<p>Kitty<p>Hello<p>Kitty<p>Hello<p>Kitty<p>Hello<p>Kitty<p>Hello<p>Kitty"
        id="f" style="width:500px; height:500px; border-radius:100px; border:none;"></iframe>
<script>
var f = document.getElementById("f");
var count = 0;
function doTest() {
  ++count;
  f.contentWindow.scrollTo(0, count*20);
  if (count == 4) {
    document.documentElement.removeAttribute("class");
  } else {
    setTimeout(doTest, 20);
  }
}
document.addEventListener("MozReftestInvalidate", doTest, false);
</script>
</body>
</html>
